Author Topic: LTWOO eGR  (Read 83071 times)

MrMojo93

Re: LTWOO eGR
« Reply #345 on: April 10, 2025, 03:03:10 PM »
No, they're similar to Shimano using something similar to the shadow derailleur hanger design. I tried setting up a Shimano direct mount hanger on my UDH bike and the LTwoo RD wouldn't fit on a Shimano specific DM hanger. It's slightly different.

So just have attach it to the hanger directly? Does that work fine?

helloitsme

Re: LTWOO eGR
« Reply #346 on: April 11, 2025, 12:12:50 PM »
Did anyone get the issue where you can't shift to the larger gears while on battery?
My egr just squeak and turn itself off whenever i do that. I assume it needs more energy to shift to large cogs.
If i plug it into the wall then shifting is fine. Shifting to smaller cogs with battery is also fine.
I suspected low battery and the app just report the wrong battery level at 100% so i left it overnight but didn't work.


jonathanf2

Re: LTWOO eGR
« Reply #347 on: April 11, 2025, 12:52:41 PM »
Did anyone get the issue where you can't shift to the larger gears while on battery?
My egr just squeak and turn itself off whenever i do that. I assume it needs more energy to shift to large cogs.
If i plug it into the wall then shifting is fine. Shifting to smaller cogs with battery is also fine.
I suspected low battery and the app just report the wrong battery level at 100% so i left it overnight but didn't work.

I highly recommend getting a separate battery charger and charging the batteries before installing it into the battery holder. Also clean the connectors periodically as well. I find my eGR port needs to be cleaned more often than my eR9 setup.

MrMojo93

Re: LTWOO eGR
« Reply #348 on: April 12, 2025, 02:41:06 AM »
IF you want to go ahead with a wide-range rear cassette and/or "clutch" like on the eGR RD, I think that's probably the way to do it.

What you need to do it is the dual-port battery that comes with the road group. The eGR version only has a single port to power the RD. Getting the road set would include that and the shifters/brakes. And then you need the eGR or MTB RD. Supposedly LTWOO will support pairing across product lines. Confirmation on that seems thin though. If I get a chance at Sea Otter I'll try to remember to ask someone.

Can you provide more info on the MTB electric RD?

Phaxe

Re: LTWOO eGR
« Reply #349 on: April 14, 2025, 03:04:36 AM »
My patience for this group set is wearing thin.

When bleeding the front brake, despite using the right tool, somehow that little grub screw in the lever got jammed in the threads and it’s stripped. Then the springs holding lever mechanism fell apart so I’m left with a bunch of springs and a jammed grub screw. Are there schematics for how these are put together so I can reassemble? Can I run the brake with no grub screw?

I’m wondering if biting the bullet on a new shifter might be easier.

trcycling

Re: LTWOO eGR
« Reply #350 on: April 14, 2025, 01:13:47 PM »
I highly recommend getting a separate battery charger and charging the batteries before installing it into the battery holder. Also clean the connectors periodically as well. I find my eGR port needs to be cleaned more often than my eR9 setup.

Interesting comment. Is there any difference between the ports on the eGR and eR9? AFAIK, the basic connector is the same. But perhaps positioning, or the surrounding or... 

I ask because I'm still trying to figure out why my first one became problematic to charge (despite brushing, alcohol etc.) and the warranty V2 unit (based on the longer cage and no other details) works fine so far and might be different

Phaxe

Re: LTWOO eGR
« Reply #351 on: April 16, 2025, 06:05:32 PM »
Just in case anyone needs to take apart the shifters on these because of stripped grub screws, I'll detail the process.

First, you'll need to remove the two hex bolts holding the lever on to the handlebars. With all of this, be super careful to not drop them and put them somewhere safe.

When you've removed the hex bolts (M4 & M2), you have two options - one, you 'push' up the fixed metal mechanism against the spring to expose the back of the grub screw. From there, if you're lucky, grab your 2mm Allen key and remove the bolt, and flip it so the non-stripped side faces outwards, and it's 'job done'. If however you're unlucky like I was, and strip both threads (these bolts must be made of playdoh), you'll need to drill it out. As my springs popped out, I did this without the spring mechanism in place.

It was pretty straightforward to drill out the grub screw and replace it with a 2mm grub screw from Amazon. Putting it back together is the tricky part.

This is the important bit as far as the springs and mechanism goes - thick spring gone on the outside, followed by the fixed metal lever. There's a plastic tube that runs through both of those, and a smaller plastic tube runs through the thinner spring. Put the thick spring in, followed by the fixed metal lever, then push the spring down and carefully slide in the plastic tube. Repeat then for the thin spring and smaller plastic tube. Then your lever should be reassembled.

Be careful, take your time.

I'm sorry I didn't take pictures of the process, but if anyone ever runs in to this issue where they strip the grub screw, get in touch and I'd be happy to help out. It's a pain in the arse if you stuff it up, but it's certainly fixable with a bit of patience and elbow grease. I'm glad I didn't buy a new shifter.

Phaxe

Re: LTWOO eGR
« Reply #352 on: April 17, 2025, 02:02:59 AM »
I do have to say, the grub screw adjustment for the lever and brake feel is actually quite a clever design, and works really well.

I know it's been said in previous posts, but it's vitally important that the grub screw is backed off on the eGR (counter-clockwise) so that all the oil can fill the reservoir, then once the bleed is complete, you can dial in the grub screw so it's perfect for how you want to set your brakes up.

I just gave my pads a clean and sandpaper, gave the rotor a clean and scuff up with some sandpaper, bedded them in, and they're feeling better than they ever have.

amacal1

Re: LTWOO eGR
« Reply #353 on: April 17, 2025, 08:55:12 AM »
I do have to say, the grub screw adjustment for the lever and brake feel is actually quite a clever design, and works really well.

I know it's been said in previous posts, but it's vitally important that the grub screw is backed off on the eGR (counter-clockwise) so that all the oil can fill the reservoir, then once the bleed is complete, you can dial in the grub screw so it's perfect for how you want to set your brakes up.

I just gave my pads a clean and sandpaper, gave the rotor a clean and scuff up with some sandpaper, bedded them in, and they're feeling better than they ever have.

I'm a novice when it comes to hydraulic brakes. I did a piss poor job setting up my brakes when I first installed the eGR and after botching my first brake bleed I decided to leave them alone for over a year. I tried again to bleed them this past weekend and didn't improve them much (though, at least the process was a lot smoother and easier my second go-round). I didn't touch the "air" port on the handle. Should I have opened that port while bleeding to let more oil in the reservoir or something?

coffeebreak

Re: LTWOO eGR
« Reply #354 on: April 17, 2025, 10:15:22 PM »
Back in March I ordered eGR groupset from a shop called 318bike store, a name I haven't seen mentioned here. Anyway, nearly a month later and 25 days of it sitting in customs it was finally delivered thru UPS today.
I didn't realize from photos the box would be so big. Connected the bits and things look okay on the first look. I paid $370 after coupons. Not the cheapest but it's going on an old Chiner bike that deserves some love after excellent service for 3 years.

I'm disappointed with the battery holder. It's extremely cheap and weak. Comparatively other components are solid.

Now I have a question. Has anyone reused hydraulic hoses? I don't want to go through the hassle of routing hoses all again. I'm thinking of removing the current shifters and calipers, keep the hoses in place, and install eGR shifter + calipers. The hoses are not old. I'm just lazy to go thru terrible internal routing process.

Phaxe

Re: LTWOO eGR
« Reply #355 on: April 18, 2025, 03:42:03 AM »
I'm a novice when it comes to hydraulic brakes. I did a piss poor job setting up my brakes when I first installed the eGR and after botching my first brake bleed I decided to leave them alone for over a year. I tried again to bleed them this past weekend and didn't improve them much (though, at least the process was a lot smoother and easier my second go-round). I didn't touch the "air" port on the handle. Should I have opened that port while bleeding to let more oil in the reservoir or something?

If you follow the video that Ltwoo posted on YouTube, that worked for me. Start by bleeding the brakes with the cup attached to the oil hole, then close that up, and still have 5ml of mineral oil in your syringe. Then close up the oil port, and open the air port and push in more oil from the syringe until no more air comes out. By that stage you shouldn’t have any more oil in the system. I found once I’d done that, it still felt a bit spongy, but when I dialed in the grub screw, the feel was firm and the pads locked to the rotors.

Also with disk brakes, it’s imperative you bed them in after this, otherwise they won’t work properly. Let me know how you go!

Phaxe

Re: LTWOO eGR
« Reply #356 on: April 18, 2025, 03:45:47 AM »
Back in March I ordered eGR groupset from a shop called 318bike store, a name I haven't seen mentioned here. Anyway, nearly a month later and 25 days of it sitting in customs it was finally delivered thru UPS today.
I didn't realize from photos the box would be so big. Connected the bits and things look okay on the first look. I paid $370 after coupons. Not the cheapest but it's going on an old Chiner bike that deserves some love after excellent service for 3 years.

I'm disappointed with the battery holder. It's extremely cheap and weak. Comparatively other components are solid.

Now I have a question. Has anyone reused hydraulic hoses? I don't want to go through the hassle of routing hoses all again. I'm thinking of removing the current shifters and calipers, keep the hoses in place, and install eGR shifter + calipers. The hoses are not old. I'm just lazy to go thru terrible internal routing process.

I don’t see why this wouldn’t work, so long as you have enough length in them for new olives.

amacal1

Re: LTWOO eGR
« Reply #357 on: April 18, 2025, 09:43:18 AM »
If you follow the video that Ltwoo posted on YouTube, that worked for me. Start by bleeding the brakes with the cup attached to the oil hole, then close that up, and still have 5ml of mineral oil in your syringe. Then close up the oil port, and open the air port and push in more oil from the syringe until no more air comes out. By that stage you shouldn’t have any more oil in the system. Let me know how you go!

Ah, I didn't watch the video again, I only used the manual this time. The process you described makes a lot of sense. I'll have to try this next time and I'm sure that's what I'm missing. However, it will be at least a few weeks before I try this again.

jonathanf2

Re: LTWOO eGR
« Reply #358 on: April 18, 2025, 11:16:14 AM »
Last week I boxed and flew with my gravel bike equipped with eGR groupset. I think the air pressure messed with my hydraulic brakes when I transported my bike. My hydraulic pressure significantly dropped when I reassembled my bike and I didn't bring any spare fluid to top it off. I highly recommend bringing a small container of hydraulic fluid or make sure your hydraulic fluid pressure is adequate before flying! Though this wasn't an issue when flying with my Shimano equipped gravel frame, so it could just be an LTwoo thing.

coffeebreak

Re: LTWOO eGR
« Reply #359 on: Today at 02:52:30 PM »
Noticing a weird issue with rear brake caliper of eGR. I used the 160mm adapter. The rotor is 160mm Shimano ice tech. The brake pads come into contact with the fins of the rotor because the pads are too low. What am I doing wrong?